The Power of Circles 1. Click on a word or formula to answer a question about that topic 2. If you get the answer right, you can click on a new word.

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Presentation transcript:

The Power of Circles

1. Click on a word or formula to answer a question about that topic 2. If you get the answer right, you can click on a new word. 3. Clear all the words from the screen. Don’t forget, if you are given the diameter you need to FIND THE RADIUS!! DirectionsDirections

The Power of Circles

Circumference What is circumference? A.The area inside of a circle.The area inside of a circle. B.The distance around a circle.The distance around a circle. C.The height of a cylinder.The height of a cylinder. D.The distance around a rectangle.The distance around a rectangle. What is circumference? A.The area inside of a circle.The area inside of a circle. B.The distance around a circle.The distance around a circle. C.The height of a cylinder.The height of a cylinder. D.The distance around a rectangle.The distance around a rectangle.

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Circumference

Area

Area What is area? A.The amount of space inside a 2D shapeThe amount of space inside a 2D shape B.The amount of space inside a 3D shapeThe amount of space inside a 3D shape C.The distance around a shapeThe distance around a shape D.The amount in piThe amount in pi What is area? A.The amount of space inside a 2D shapeThe amount of space inside a 2D shape B.The amount of space inside a 3D shapeThe amount of space inside a 3D shape C.The distance around a shapeThe distance around a shape D.The amount in piThe amount in pi

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Diameter How do you find diameter if you are given the radius? A.Divide the radius by piDivide the radius by pi B.Multiply the radius by piMultiply the radius by pi C.Divide the radius by 2Divide the radius by 2 D.Multiple the radius by 2Multiple the radius by 2 How do you find diameter if you are given the radius? A.Divide the radius by piDivide the radius by pi B.Multiply the radius by piMultiply the radius by pi C.Divide the radius by 2Divide the radius by 2 D.Multiple the radius by 2Multiple the radius by 2

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Diameter What is a Diameter? A.The amount of space inside a 2D shapeThe amount of space inside a 2D shape B.The distance from any point on the outside of a circle to the center.The distance from any point on the outside of a circle to the center. C.The distance from one side of a circle to the other going through the center.The distance from one side of a circle to the other going through the center. D.The distance around the side of a circle.The distance around the side of a circle. What is a Diameter? A.The amount of space inside a 2D shapeThe amount of space inside a 2D shape B.The distance from any point on the outside of a circle to the center.The distance from any point on the outside of a circle to the center. C.The distance from one side of a circle to the other going through the center.The distance from one side of a circle to the other going through the center. D.The distance around the side of a circle.The distance around the side of a circle.

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Radius How do you find radius if you are given the diameter? A.Divide the diameter by piDivide the diameter by pi B.Multiply the diameter by piMultiply the diameter by pi C.Divide the diameter by 2Divide the diameter by 2 D.Multiple the diameter by 2Multiple the diameter by 2 How do you find radius if you are given the diameter? A.Divide the diameter by piDivide the diameter by pi B.Multiply the diameter by piMultiply the diameter by pi C.Divide the diameter by 2Divide the diameter by 2 D.Multiple the diameter by 2Multiple the diameter by 2

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Radius What is a radius? A.The amount of space inside a 2D shapeThe amount of space inside a 2D shape B.The distance from any point on the outside of a circle to the center.The distance from any point on the outside of a circle to the center. C.The distance from one side of a circle to the other going through the center.The distance from one side of a circle to the other going through the center. D.The distance around the side of a circle.The distance around the side of a circle. What is a radius? A.The amount of space inside a 2D shapeThe amount of space inside a 2D shape B.The distance from any point on the outside of a circle to the center.The distance from any point on the outside of a circle to the center. C.The distance from one side of a circle to the other going through the center.The distance from one side of a circle to the other going through the center. D.The distance around the side of a circle.The distance around the side of a circle.

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Center What is a center? A.The middle point of a circleThe middle point of a circle B.Any point inside a circleAny point inside a circle C.The middle of the diameterThe middle of the diameter D.Any point on the outside of a circleAny point on the outside of a circle What is a center? A.The middle point of a circleThe middle point of a circle B.Any point inside a circleAny point inside a circle C.The middle of the diameterThe middle of the diameter D.Any point on the outside of a circleAny point on the outside of a circle

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Pi Which of the follow is NOT true about pi? A.It is goes on forever without repeatingIt is goes on forever without repeating B.It is a letter in the Greek alphabetIt is a letter in the Greek alphabet C.It is the ratio between the circumference and diameterIt is the ratio between the circumference and diameter D.It is exactly 3.14It is exactly 3.14 Which of the follow is NOT true about pi? A.It is goes on forever without repeatingIt is goes on forever without repeating B.It is a letter in the Greek alphabetIt is a letter in the Greek alphabet C.It is the ratio between the circumference and diameterIt is the ratio between the circumference and diameter D.It is exactly 3.14It is exactly 3.14

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C=2πr What is the circumference of this circle? A.15.7cm15.7cm B.7.64cm7.64cm C.31.4cm31.4cm D.5.87cm5.87cm What is the circumference of this circle? A.15.7cm15.7cm B.7.64cm7.64cm C.31.4cm31.4cm D.5.87cm5.87cm 5cm

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9.2 mm

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3.6mm

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7.4cm

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Well Done! Now try the next word!

Hazzah! You are now the pi master!! You are now the pi master!!